Merge three steps together and reorder them.
We merge "Tor has built a circuit", "the time has synced" and "Tor is ready" into a single step called "Tor is ready". This simplifies scenarios quite a bit, and allows us to always do the checks in the right order, without each scenario trying its own version. Speaking of the right order: we wait for the "Tor is ready" notification first. it disappears after a timeout, so if we wait for other events first, we sometimes cannot find the notification picture on screen later on.